Notes: 158553-51660 O-RING, P14 is original YANMAR product. 158553-51660 O-RING, P145 is commonly used in transmissions/axles/engines 4TNV94L-XHYB2, 4TNV94L-XHYB, 4TNV94L-PLK, 4TNV94L-PLK2, 4TNV94L-PIKA, . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849